package com.codingxyz.simple.lock;


import java.util.concurrent.CountDownLatch;

public class CountDownLatchDemo {


    public static void main(String[] args) throws InterruptedException {

        CountDownLatch countDownLatch = new CountDownLatch(6);
        for (int i = 1; i <=6 ; i++) {
            new Thread(()->{
                System.out.println(Thread.currentThread().getName() + "\t 上完自习，离开教室  ");
                countDownLatch.countDown();
            },String.valueOf(i)).start();
        }

        countDownLatch.await();
        System.out.println(Thread.currentThread().getName()+"\t 最后离开 ");
    }
}
